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» Northern California Ford Owners     » Automotive   » Tech Talk   » why do most pistons have 4 valve reliefs

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Author Topic: why do most pistons have 4 valve reliefs
gercolla1
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I know that the valves are not perpendicular to the piston on a 302.Is there reason for the extra reliefs?I noticed that when shopping for pistons the extra reliefs are an option. [burnout] [burnout] [burnout]

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Posts: 2171 | From: Sampan San Francisco | Registered: Jul 2003  |  :
The Nick
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Aftermarket pistons come with 4 sets because they have valve reliefs for the TFS Twisted Wedge heads, which are in a different location than other heads.

[ February 16, 2005, 11:21 PM: Message edited by: The Nick ]

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Fast, Cheap or Reliable. Pick two and live with it.
Posts: 1215 | From: The Delta | Registered: Dec 2002  |  :
CDT
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most of them have 4 because it is easier for the manufacture not to have to make right and left pistons. Higher quality pistons only have two in most cases.

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Posts: 1053 | From: Hayward | Registered: Nov 2004  |  :


 
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